Are Postoperative Patient PROMS Influenced by Recall of Preoperative Scores?

Are Postoperative Patient Patient Reported Outcome Measures Influenced by Recall of Preoperative Scores? - a Randomized Controlled Trial

To evaluate whether postoperative PROM scores of spine patients are influenced by memory bias

Inclusion Criteria:

• All adult patients with valid preoperative PROM scores submitted to spine surgery due to degenerative pathology from January 2019 to April 2020 at our center (spine unit of a neurosurgical department in a Portuguese university hospital) were included in the study and received PROMs questionnaires with a letter of consent.

Exclusion Criteria:

• Patients without valid preoperative questionnaires were excluded from the study while patients were lost to follow-up if mail questionnaires were not completed two months after PROMs remittance or if they had submitted incomplete or invalid answers.